The ABB AF40-30-00-41 is a 3-pole contactor rated for 42 A, with a 24-60 V AC/DC coil. It switches motor and resistive loads in control panels, typically mounted on a DIN rail inside an enclosure.
What the 42 A rating means for fit
The 42 A rating is the contactor's thermal current (Ith) for AC-1 resistive loads. For motor starting (AC-3 duty), the actual switching current will be lower — check the motor FLA and duty cycle against the ABB derating curve. The 24-60 V coil covers both AC and DC control signals, so a single part works across mixed-voltage panels.